Thanks for the report!

This is somewhat strange, because I've seen successful builds on Windows with the same versions of Strawberry Perl (I've set up a bunch of automated tests in the github repo).

Out of curiosity, what versions of as and gcc do you use, on what kind of machine?

In any case, one can find some stackoverflow questions and even a gcc bug report for the error message, I'll try one of the workarounds mentioned there.